diff --git a/github/repos.go b/github/repos.go
index ed9052c..2e9b29e 100644
--- a/github/repos.go
+++ b/github/repos.go
@@ -146,6 +146,9 @@ func (s *RepositoriesService) List(user string, opt *RepositoryListOptions) ([]R
 		return nil, nil, err
 	}
 
+	// TODO: remove custom Accept header when license support fully launches
+	req.Header.Set("Accept", mediaTypeLicensesPreview)
+
 	repos := new([]Repository)
 	resp, err := s.client.Do(req, repos)
 	if err != nil {
@@ -180,6 +183,9 @@ func (s *RepositoriesService) ListByOrg(org string, opt *RepositoryListByOrgOpti
 		return nil, nil, err
 	}
 
+	// TODO: remove custom Accept header when license support fully launches
+	req.Header.Set("Accept", mediaTypeLicensesPreview)
+
 	repos := new([]Repository)
 	resp, err := s.client.Do(req, repos)
 	if err != nil {
diff --git a/github/repos_test.go b/github/repos_test.go
index 3a2c413..6e98e28 100644
--- a/github/repos_test.go
+++ b/github/repos_test.go
@@ -19,6 +19,7 @@ func TestRepositoriesService_List_authenticatedUser(t *testing.T) {
 
 	mux.HandleFunc("/user/repos", func(w http.ResponseWriter, r *http.Request) {
 		testMethod(t, r, "GET")
+		testHeader(t, r, "Accept", mediaTypeLicensesPreview)
 		fmt.Fprint(w, `[{"id":1},{"id":2}]`)
 	})
 
@@ -39,6 +40,7 @@ func TestRepositoriesService_List_specifiedUser(t *testing.T) {
 
 	mux.HandleFunc("/users/u/repos", func(w http.ResponseWriter, r *http.Request) {
 		testMethod(t, r, "GET")
+		testHeader(t, r, "Accept", mediaTypeLicensesPreview)
 		testFormValues(t, r, values{
 			"type":      "owner",
 			"sort":      "created",
@@ -71,6 +73,7 @@ func TestRepositoriesService_ListByOrg(t *testing.T) {
 
 	mux.HandleFunc("/orgs/o/repos", func(w http.ResponseWriter, r *http.Request) {
 		testMethod(t, r, "GET")
+		testHeader(t, r, "Accept", mediaTypeLicensesPreview)
 		testFormValues(t, r, values{
 			"type": "forks",
 			"page": "2",